bcschmerker4
That's bcschmerker4® to you!
Originally Posted by wnmnkh /img/forum/go_quote.gif
...At last, this is the picture of the headphones I took.
At least the earcups are large enough, and deep enough in particular, for motors buildable under United States Patent 5,151,943, granted to Carl Van Gelder of McIntosh Laboratory, Inc., in the early 1990's. McIntosh® discovered the problem of magnetic interactions among the motor components as a cause of distortion and eventually developed a shield system of non-ferromagnetic, highly conductive cylinders straddling the pole pieces to solve this issue by isolating the voice coil from the pole piece, much as the +Vgg screens and -Vkk suppressors isolate the control grids from plate delta-voltage kickback in pentodes and pentagrid tubes. No headphone manufacturer has previously used this design.